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XMM Upper Module Undergoes Testing

2 March 1999

The XMM Upper Module, bearing the Focal Plane Assembly, is currently being tested in the Large Space Simulator (LSS) at ESTEC. Before closing the chamber and starting the pump-down for theThermal-Balance/Thermal Vacuum (TB/TV) tests, some final checks were made on the facility motion system. The TB/TV tests are scheduled to lastten days.

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XMM in the Large Space Simulator

Last Update: 1 September 2019
24-Jan-2026 11:03 UT

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